From the overseas version of Just Dance Wii.

Nintendo is going all out with its localization of Ubisoft's Just Dance Wii. The Japanese version of the dance game is being tuned for local audiences and will feature music from top Japanese groups.

A retail listing at HMV has a song and artist list:

• AKB48: Heavy Rotation
• Kara: Jumping
• Kara: Mister
• Exile: Choo Choo Train
• Kumi Koda: Cutie Honey
• Exile & Kumi Koda: Won't Be Long
• Namie Amuro: Sexy Girl
• BoA: Valenti
• TRF: Survival Dance
• Tackey and Tsubasa: Venus
• Kishidan: One Night Carnival
• Morning Musume: Renai Revolution 21
• Pink Lady: UFO
• Dream5: Koi no Dial 6700
• Toho Shinki: Why
• Ketsumeishi: Kimi ni Bump
• Gorie with Jasmine & Joan: Micky

This is just a partial list.

According to HMV's listing, most of the songs are performed by the original artists.

Nintendo revealed at a retailer briefing yesterday that Just Dance Wii will be released on October 13.